Note: Early English patents (pre 1916) were numbered by the year and started at patent #1 at the start of each year in January. The patent # used in DATAMP represents the year of issue of the application and the patent #. This patent is #21,379of the year 1911.

Abstract:

Testing physical qualities of materials.-Relates to machines of the steelyard type, and comprises arrangements for enabling specimens of different sizes to be dealt with at a convenient height above the floor level. A fixed bed-plate B carries four grinding-pillars A', A<2>. A<3>, A<4> supporting an entablature C. On two of the pillars slides one cross-head L<1>, through which pass two screwed shafts K', K<2> engaging the cross-head for the purpose of moving it up and down as required, by means of gearing and a motor C', or by hand. The screwed rods move freely on the entablature. The rods K<1>, K<2> are attached to a second cross-head L<2> carrying a flat for one knife-edge of a steelyard J, the other knife-edge of which bears against a flat G<2> attached to a hydraulic cylinder G' secured to the bed-plate B. Guided on the other two pillars A<2>, A<4> are two uprights D', D<2> notched to take at any height a crosshead E which can be locked to them, the uprights being connected to a similar adjustable cross - head F attached to the hydraulic ram. The stress is applied between the cross-heads E and L'. The steelyard J is linked to a weighing - steelyard at a convenient height. The weight of the floating frame formed by the screwed shafts K', K<2>, cross-head L<2>, and an upper connecting-piece M<2> is counterbalanced by a lever M. The pinion C<5> for turning the screwed rods is elongated so as to remain in gear in all positions of the floating frame.